采用禁水8小时法,测定30例慢性肾功能不全患者的尿渗透压、渗比及纯水清除率。并以同期肾功能正常之肾病综合征Ⅲ型46例及慢性肾炎普通型28例对照。结果表明本法可作为判断肾功能不全严重程度的重要依据,且对鉴别氮质血症可否逆转有一定价值。 Urinary osmotic pressure, osmotic ratio and pure water clearance rate were measured in 30 patients with chronic renal insufficiency by water forbidden 8 hours. 46 cases of nephrotic syndrome with normal renal function in the same period and 28 cases of chronic nephritis common type. The results show that this method can be used as an important basis to determine the severity of renal insufficiency, and to identify the reversibility of azotemia has some value.